Quasiperiodically forced damped pendula and Schrödinger equations with quasiperiodic potentials: Implications of their equivalence
Abstract
Certain firstorder nonlinear ordinary differential equations exemplified by strongly damped, quasiperiodically driven pendula and Josephson junctions are isomorphic to Schrödinger equations with quasiperiodic potentials. The implications of this equivalence are discussed. In particular, it is shown that the transition to Anderson localization in the Schrödinger problem corresponds to the occurrence of a novel type of strange attractor in the pendulum problem. This transition should be experimentally observable in the frequency spectrum of the pendulum or Josephson junction.
 Publication:

Physical Review Letters
 Pub Date:
 November 1985
 DOI:
 10.1103/PhysRevLett.55.2103
 Bibcode:
 1985PhRvL..55.2103B
 Keywords:

 Josephson Junctions;
 Pendulums;
 Schroedinger Equation;
 Strange Attractors;
 Chaos;
 Forced Vibration;
 Potential Theory;
 Power Spectra;
 Physics (General);
 05.45.+b;
 03.20.+i